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thellier
C tool to obtain functions-tree, function adresses & sizes ??
Posted on: 2014/4/11 9:39    #1
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Hi everyone

Is there some Amiga tools for C langage developpement that will do :

Functions-tree from a C source : what function call another function,etc...

Functions-adresse from binary : extract function names and offsets : thing like function foo() begin at offset 2000 and finish at offset 14000 (so is 12000 long)
So will know where is each function in binary and what size it occupy

Thanks

Alain Thellier
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kas1e
Re: C tool to obtain functions-tree, function adresses & sizes ??
Posted on: 2014/4/11 10:06    #2
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@theller
Quote:

Functions-tree from a C source : what function call another function,etc...


You mean command line or gui one ? For gui one: codebench.

Resized Image

Quote:

Functions-adresse from binary : extract function names and offsets : thing like function foo() begin at offset 2000 and finish at offset 14000 (so is 12000 long)
So will know where is each function in binary and what size it occupy


That one imho can be mix of objdump + grep , like:

Quote:

ram:> objdump -d binary | grep ">:"


Will show you all the functions names your binary have and offset. Size of function will be next ">:" founded. Probably some script will be better , but main idea is objdump + grep.
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broadblues
Re: C tool to obtain functions-tree, function adresses & sizes ??
Posted on: 2014/4/11 12:46    #3
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Quote:

Functions-tree from a C source : what function call another function,etc...


From Source I'm not sure, couldn't be that hard to script it with python.

Run time, have looked at gcov ? I believe it works. (as opposed to gprof which doesn't work on SAMs)




Quote:

Functions-adresse from binary : extract function names and offsets : thing like function foo() begin at offset 2000 and finish at offset 14000 (so is 12000 long)
So will know where is each function in binary and what size it occupy


Objdump, but optimisation may make simplistic start / stop less meaningful.
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thellier
Re: C tool to obtain functions-tree, function adresses & sizes ??
Posted on: 2014/4/11 13:15    #4
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@all

Many thanks for you help

Alain
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JosDuchIt
Re: C tool to obtain functions-tree, function adresses & sizes ??
Posted on: 2014/4/12 18:53    #5
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@broadblues

tried to use gcov

5.Stock:Backup_Datas/Gui4Cli/Dev/Gui4Cli_Dev/G4C_18> gcc guis:Dev/Gui4Cli_Dev/G4C_18/Gui.c -fprofile-arcs -ftest-coverage -gstabs -lauto -N -o g18:gui4clid
In file included from guis:Dev/Gui4Cli_Dev/G4C_18/Gui.c:105:
guis:Dev/Gui4Cli_Dev/G4C_18/clip.h: In function 'ClipOpen':
guis:Dev/Gui4Cli_Dev/G4C_18/clip.h:29: warning: comparison is always true due to limited range of data type
5.Stock:Backup_Datas/Gui4Cli/Dev/Gui4Cli_Dev/G4C_18> gcov gui4clid
gui4clid.gcno:cannot open graph file
5.Stock:Backup_Datas/Gui4Cli/Dev/Gui4Cli_Dev/G4C_18> gcov -f gui4clid
gui4clid.gcno:cannot open graph file


Something done wrong?
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joerg
Re: C tool to obtain functions-tree, function adresses & sizes ??
Posted on: 2014/4/12 19:06    #6
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@JosDuchIt

Quote:
Something done wrong?
It looks like you didn't run the program before using gcov?
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JosDuchIt
Re: C tool to obtain functions-tree, function adresses & sizes ??
Posted on: 2014/4/13 7:55    #7
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@joerg
you mean gui4clid should be running when you launch gcov ?
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joerg
Re: C tool to obtain functions-tree, function adresses & sizes ??
Posted on: 2014/4/13 10:49    #8
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@JosDuchIt

No, you have to run gui4clid, quit it and then use gcov.
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JosDuchIt
Re: C tool to obtain functions-tree, function adresses & sizes ??
Posted on: 2014/4/13 14:15    #9
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@joerg
too bad, i can't get rid of the "cannot open graph file"

7.Stock:Backup_Datas/Gui4Cli/Dev/Gui4Cli_Dev/G4C_18> gcc guis:Dev/Gui4Cli_Dev/G4C_18/Gui.c -fprofile-arcs -ftest-coverage -gstabs -lauto -N -o g18:gui4clid
In file included from guis:Dev/Gui4Cli_Dev/G4C_18/Gui.c:105:
guis:Dev/Gui4Cli_Dev/G4C_18/clip.h: In function 'ClipOpen':
guis:Dev/Gui4Cli_Dev/G4C_18/clip.h:29: warning: comparison is always true due to limited range of data type
7.Stock:Backup_Datas/Gui4Cli/Dev/Gui4Cli_Dev/G4C_18> gui4clid
***Command 'gui4clid' returned with unfreed signals 02000000! // on quitting,
7.Stock:Backup_Datas/Gui4Cli/Dev/Gui4Cli_Dev/G4C_18> gcov gui4clid
gui4clid.gcno:cannot open graph file
7.Stock:Backup_Datas/Gui4Cli/Dev/Gui4Cli_Dev/G4C_18> gcov -f gui4clid
gui4clid.gcno:cannot open graph file
7.Stock:Backup_Datas/Gui4Cli/Dev/Gui4Cli_Dev/G4C_18> gui4 gui4clid
// no unfreed signals on quitting when the gui4 launcher is used
7.Stock:Backup_Datas/Gui4Cli/Dev/Gui4Cli_Dev/G4C_18> gcov gui4clid
gui4clid.gcno:cannot open graph file
7.Stock:Backup_Datas/Gui4Cli/Dev/Gui4Cli_Dev/G4C_18> gcov -f gui4clid
gui4clid.gcno:cannot open graph file
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broadblues
Re: C tool to obtain functions-tree, function adresses & sizes ??
Posted on: 2014/4/13 21:54    #10
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@JosDuchIt

Quote:

too bad, i can't get rid of the "cannot open graph file"

7.Stock:Backup_Datas/Gui4Cli/Dev/Gui4Cli_Dev/G4C_18> gcc guis:Dev/Gui4Cli_Dev/G4C_18/Gui.c -fprofile-arcs -ftest-coverage -gstabs -lauto -N -o g18:gui4clid
In file included from guis:Dev/Gui4Cli_Dev/G4C_18/Gui.c:105:
guis:Dev/Gui4Cli_Dev/G4C_18/clip.h: In function 'ClipOpen':
guis:Dev/Gui4Cli_Dev/G4C_18/clip.h:29: warning: comparison is always true due to limited range of data type
7.Stock:Backup_Datas/Gui4Cli/Dev/Gui4Cli_Dev/G4C_18> gui4clid
***Command 'gui4clid' returned with unfreed signals 02000000! // on quitting,
7.Stock:Backup_Datas/Gui4Cli/Dev/Gui4Cli_Dev/G4C_18> gcov gui4clid
gui4clid.gcno:cannot open graph file
7.Stock:Backup_Datas/Gui4Cli/Dev/Gui4Cli_Dev/G4C_18> gcov -f gui4clid
gui4clid.gcno:cannot open graph file
7.Stock:Backup_Datas/Gui4Cli/Dev/Gui4Cli_Dev/G4C_18> gui4 gui4clid
// no unfreed signals on quitting when the gui4 launcher is used
7.Stock:Backup_Datas/Gui4Cli/Dev/Gui4Cli_Dev/G4C_18> gcov gui4clid
gui4clid.gcno:cannot open graph file
7.Stock:Backup_Datas/Gui4Cli/Dev/Gui4Cli_Dev/G4C_18> gcov -f gui4clid
gui4clid.gcno:cannot open graph file



Two things:

1. gcov [Options] *SOURCEFILE*

ie not program name

2. you need to link with -lunix else the gcov writes the gdca file to the wrong place.

3. Fix that warning!

Quote:

guis:Dev/Gui4Cli_Dev/G4C_18/clip.h: In function 'ClipOpen':
guis:Dev/Gui4Cli_Dev/G4C_18/clip.h:29: warning: comparison is always true due to limited range of data type


There little point in profiling broken code.

wait that's three things ...
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JosDuchIt
Re: C tool to obtain functions-tree, function adresses & sizes ??
Posted on: 2014/4/14 8:37    #11
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@broadblues

thanks, i am making progress
i understand that to generate the graph file i have to mention all source files included with gui.c on the gcov command list.
I get a command line that is too long for the CLI bufffer
I suppose there is a way to split such long lines, but if i ever knew i forgot about it.
Can you remind me of this, or is there an other way to solve the problem ?
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broadblues
Re: C tool to obtain functions-tree, function adresses & sizes ??
Posted on: 2014/4/14 14:24    #12
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@JosDuchIt

Quote:

thanks, i am making progress
i understand that to generate the graph file i have to mention all source files included with gui.c on the gcov command list.


I'm not sure, if the files are included, whether they need seperate entries or not.

Quote:

I get a command line that is too long for the CLI bufffer


Just how many files are you including in the GUI.c files? I never ever managed to type a command that was too long, I just tried and gave up after 1500 characters. I don't think there is actually a limit.

How are you generating you command line?

Quote:

I suppose there is a way to split such long lines, but if i ever knew i forgot about it.


I'm not sure if there is under a normal AmigaOS shell but under sh (abc-shell) you can type a \ at the end of a line to continue onto a new one.

Do you actually need to profile every source?

Any way I would create something like that with a make file or perhaps arexx script rather than by hand. (ARExx tops out at 32768 characters for string though, so perhaps python)
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JosDuchIt
Re: C tool to obtain functions-tree, function adresses & sizes ??
Posted on: 2014/4/14 20:23    #13
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@broadblues

i just want to generate the callgraph

My command line is 880 characters long, and the CLI accepts some 500 characters

I was able to launch the command with a CLI script.


it did not overwrite the gui.cno file that seems to have been produced yesterday (if at all with gcov gui.c the includes containing main(à source)

It is a binary file anyway





Edited by JosDuchIt on 2014/4/14 20:44:32
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broadblues
Re: C tool to obtain functions-tree, function adresses & sizes ??
Posted on: 2014/4/14 21:11    #14
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@JosDuchIt

Quote:

i just want to generate the callgraph

My command line is 880 characters long, and the CLI accepts some 500 characters


The console can accept more than 800 characters. I booted inot Update6 to be sure I was using the public console and tested with along echo, I was still going at 900+ not sure what the limit is or where you get your 500 or so from.

Quote:

I was able to launch the command with a CLI script.


That's a much better way to do it anyway. I doubt if I could type 800 characters with out any typos

Quote:

it did not overwrite the gui.cno file that seems to have been produced yesterday (if at all with gcov gui.c the includes containing main(? source)

It is a binary file anyway


It's not supposed to. Did you run Gui4Cli first?

Did you get any errors reported by Gcov when you ran it after GUI4CLI ? Did you *quit* gui4cli before running?

Did you link it with -lunix as stated above?
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JosDuchIt
Re: C tool to obtain functions-tree, function adresses & sizes ??
Posted on: 2014/4/16 11:45    #15
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@broadblues
i think i respected everything ( i check again later) except eliminating the warning
comparison is always true due to limited range of data type

for the second line here

port->mp_SigBit = AllocSignal(-1) ;
if (port->mp_SigBit >= 0) /// warning

according to the .doc below a -1 output is possible though

What am i doing wrong?


exec.library/AllocSignal
NAME
AllocSignal -- allocate a signal bit

SYNOPSIS
signalNum = AllocSignal(signalNum)

BYTE AllocSignal(BYTE);

FUNCTION
Allocate a signal bit from the current tasks' pool. Either a
particular bit, or the next free bit may be allocated. The signal
associated with the bit will be properly initialized (cleared). At
least 16 user signals are available per task. Signals should be
deallocated before the task exits.

If the signal is already in use (or no free signals are available)
a -1 is returned.
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salass00
Re: C tool to obtain functions-tree, function adresses & sizes ??
Posted on: 2014/4/16 12:48    #16
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@JosDuchIt

Quote:

if (port->mp_SigBit >= 0) /// warning


mp_SigBit is of type UBYTE so it can't be negative.

To make the comparison work how you want you can use a cast like so:

Quote:

if ((BYTE)port->mp_SigBit >= 0)


Replace BYTE with int8 if your code is for AmigaOS >= 4.0 only.
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thellier
Re: C tool to obtain functions-tree, function adresses & sizes ??
Posted on: 2014/4/16 14:41    #17
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Hello


>Functions-adresse from binary : extract function names and offsets : thing like function foo() begin at offset 2000 and finish at offset 14000 (so is 12000 long)
OK I have made a little C program "ObjDumpFuncs"
that do that from an objdump file

It give this result

<ObjDumpFuncs: Microbe3D.asm >
<============================>
Function 0 01000074 16777332 _start 36 bytes
Function 1 01000098 16777368 libOpen 136 bytes
Function 2 01000120 16777504 libClose 100 bytes
Function 3 01000184 16777604 libExpunge 272 bytes
Function 4 01000294 16777876 libInit 228 bytes
[...]
Function 121 010051b4 16798132 LIB_Open 4 bytes
Function 122 010051b8 16798136 LIB_Init 80 bytes
[...]
Function 402 0101a9e8 16886248 ShowPointNearMouse 472 bytes
Function 403 0101abc0 16886720 OSLoadDT 596 bytes
Function 404 0101ae14 16887316 OSLoadT 308 bytes
Function 405 0101af48 16887624 ReadMTL 1640 bytes
Function 406 0101b5b0 16889264 ReadOBJ1 804 bytes
Function 407 0101b8d4 16890068 AutoSkinVN 1604 bytes
[...]
Function 430 01020000 16908288 SetMst 96 bytes
Function 431 01020060 16908384 SetMt 84 bytes
Function 432 010200b4 16908468 SetMs 96 bytes
Function 433 01020114 16908564 SetMr 480 bytes
Function 434 010202f4 16909044 MultMr 272 bytes
Function 435 01020404 16909316 MultM 564 bytes
Function 436 01020638 16909880 ClipTriangle 12332 bytes
[...]
Function 510 01033b70 16989040 strcpy 8 bytes
Function 511 01033b78 16989048 strlen 8 bytes
Function 512 01033b80 16989056 __NewlibCall 20 bytes
<============================>
<Functions: 513 >
<Average size: 412 >
<Max size: 12332 >
<Min size: 4 >

>Functions-tree from a C source : what function call another function,etc...
I obtain something like that

[...]
Call 3052 101a3b4 16884660 Function ReadOBJ2 to ReadLine
Branch 3053 101a3bc 16884668 Function ReadOBJ2
Call 3054 101a3cc 16884684 Function ReadOBJ2 to ReadName
Branch 3055 101a3d8 16884696 Function ReadOBJ2
Branch 3056 101a3e0 16884704 Function ReadOBJ2
[...]
Branch 3064 101a430 16884784 Function ReadOBJ2
Call 3065 101a438 16884792 Function ReadOBJ2 to NewListItem
Call 3066 101a448 16884808 Function ReadOBJ2 to ReadFloats
Call 3067 101a450 16884816 Function ReadOBJ2 to ReadLine
[...]
Not exactly a function-tree but all thta is needed to draw one

I will post the program to os4depot soon... if someone is interested

Alain Thellier
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JosDuchIt
Re: C tool to obtain functions-tree, function adresses & sizes ??
Posted on: 2014/4/16 19:49    #18
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@salass00


thanks i got rid of the waning

@broadblues
However i still cannot generate the calllgraph
i make use of predefined aliases that are presented below as if defined just before usage

G4C_18>alias GCCG4DL gcc guis:Dev/Gui4Cli_Dev/G4C_18/Gui.c -gstabs -fprofile-arcs -ftest-coverage -N -o g18:gui4clidl -lauto -lunix
G4C_18>GCCG4DL
G4C_18> delete Gui4Cli
G4C_18> rename Gui4Clidl Gui4Cli
G4C_18> gui4 d //gui4 lis the Gui4Cli launcher, which we copied in the G4C_18 drawer to be sure it launches this version
// here we launch in debug mode, we open & close some Gui4Cli scripts then quit Gui4Cli


G4C_18>alias gcovG4 "gcov >g18:gui.graf timer.h errors.h textinhook.h command.h eval.h ...... gui.c " // very long command
G4C_18>gcovG4
timer.gcno:cannot open graph file
errors.gcno:cannot open graph file
textinhook.gcno:cannot open graph file
/// etc for all modules

gui.graf contains only the kind of info below for all source modules, no callgraph info

File 'guis:Dev/Gui4Cli_Dev/G4C_18/timer.h'
Lines executed:0.00% of 60
guis:Dev/Gui4Cli_Dev/G4C_18/timer.h:creating 'timer.h.gcov'

File 'guis:Dev/Gui4Cli_Dev/G4C_18/errors.h'
Lines executed:0.00% of 132
guis:Dev/Gui4Cli_Dev/G4C_18/errors.h:creating 'errors.h.gcov'
etc

The files Gui.gcda & Gui.gcno were generated

Q: Where should the callgraphs appear normally ?
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broadblues
Re: C tool to obtain functions-tree, function adresses & sizes ??
Posted on: 2014/4/16 21:30    #19
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@JosDuchIt

You don't need to specify all the include files just the source file.

But after a bit more reading I see that I've got my command output mixed up, gprof is the one that will produce a call graph in the sense that you mean (though only for functions called during your test run).

see here:

http://sourceware.org/binutils/docs/g ... all-Graph.html#Call-Graph

gprof doesn't wrk on SAMs but it might on other machines.

What do you actually want to do? I mean why do you want the graph?


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JosDuchIt
Re: C tool to obtain functions-tree, function adresses & sizes ??
Posted on: 2014/4/17 8:25    #20
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@broadblues

The .h files mentioned are actually source files (i inherited the situation as i am not the original author -this is D. Keletsekis. Don't know why he did choose to mention them that way but till now did not have reaons to change that.)

Why do i need callgraph gneration ?
Generating a callgraph fom the source is obviously interesting to get a better understanding of the source and to debug it.
You can build your own tools around it, more easily
This is what i am doing: using Gui4cli-written tools to maintain & improve the Gui4Cli source. The first is part of my motivation to do the latter.
I am more of a 'one-project' (amateuristic) C-programmer
In general the avalable IDE's are too sophisticated and geared to "multiple projects" professional/experienced C-programmers.


Too bad gcov is not what i am looking for. (and gprof not working on SAM's :(( , although not ideal too, only generating the graph for used functions)
Surely if the compiler/linker can identify the calls, generating a callgraph without running the program, is possible. I see a way in doing it (with Gui4cli) from the sources, but if feel there must be a better way using the compiler/linker built-in ntelligence, or the info in final binary or (and) in intermediate outputs.
My knowledge of the compiling process is poor however.
Having this kind of graph generation possibility, independent from a particular IDE, would be the great.
I feel surprised there is no such tool known/readily available.
It might help to attract new 'one-project' or 'first-project' programmers.

It might help convince some of them to improve - for example to try to add an arexx port - to their favorite open-source program
(or add a a Gui4Cli port instead - which according to D.Keletsekis is more efficient and easy - i can confirm only it is easy)

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